Screw



FIG. 1 is a perspective view of a screw showing my new design;

FIG. 2 is a back plan view of the screw shown in FIG. 1;

FIG. 3 is a front plan view of the screw shown in FIG. 1;

FIG. 4 is a top side view of the screw shown in FIG. 1;

FIG. 5 is a back side view of the screw shown in FIG. 1;

FIG. 6 is a left side view of the screw shown in FIG. 1; and,

FIG. 7 is a right side view of the screw shown in FIG. 1. 

CLAIM The ornamental design for a screw, as shown and described. 